Mitsui no Rehouse tops AI picks at 53.7%, Gemini 100%

Branding Works, a Chiba-based company that provides SEO and AI search measures, runs this survey as a fixed-point observation, recording daily what generative AI answers when asked for real estate sale recommendations. The September 2026 results show a clear split between AI models.

The survey also found that AI answers tend to frame companies around three themes: strong support systems (appearing in 42.6% of answers), sales and customer-acquisition strength (27.8%), and the reassurance of major companies (25.9%). Cited sources were mostly comparison and ranking sites, with home4u.jp leading at a 9.3% citation share. This suggests that which media a company appears in may shape whether AI recommends it.

The results indicate that for real estate agencies, being named by AI is becoming a distinct channel from search rankings, and the companies that gain may be those that design how they are described across the themes AI uses. The outcome hinges on whether AI models continue to differ this sharply — and on whether ChatGPT closes the gap from its current 81% no-brand-answer rate. The findings reflect conditions during the survey period only, since AI answers change daily.